About database

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Manual
12

Server Configuration

to the database (as explained in the JPA Overview section in chapter 3). The max attribute specifies ... , path, which specifies the location of ObjectDB databases that the server manages. The $objectdb ... of an ObjectDB server is similar to the document root directory of a web server. Every database file
Manual
12

UPDATE SET Queries in JPA/JPQL

. Applying changes to the database by calling the commit method. JPQL UPDATE queries provide ... the database, UPDATE queries do not retrieve data from the database, but when executed, update the content of specified entity objects in the database. Updating entity objects in the database using
Manual
12

UPDATE SET Queries in JPA/JPQL [2011-11-22]

. Applying changes to the database by calling the commit method. JPQL UPDATE queries provide ... the database, UPDATE queries do not retrieve data from the database, but when executed, update the content of specified entity objects in the database. Updating entity objects in the database using
Forum
12

500Mb ObjectDb database opening issue

Hi, I have observed that 500 Mb objectDb database opening time is very slow (~3 seconds ... any way to speed-up open time for big databases? Definitely, it's too long for 500 Mb database! We gonna work with ObjectDb databases which may have size more than 5Gb and opening database time
Issue
11

Database access error , Doctor hanging on trying to repair, production shutdown at our biggest customer

we have a database shutdown, logs are showing: [2017-07-10 21:07:23 #1 store] Database 'F ... : SectionClassifier{2->merger[2699]-missing:1}     on running Doctor it hangs after reading in the database, just ... the database (i.e. it is not a test database but contains useful data) and the Doctor cannot help
Manual
11

JPA Query Structure (JPQL / Criteria)

is that SQL works with relational database tables, records and fields, whereas JPQL works with Java ... rather than just field values from database tables, as with SQL. That makes JPQL more object oriented friendly ... JPQL Query The following query retrieves all the Country objects in the database: SELECT c FROM
Manual
11

Updating JPA Entity Objects

Modifying existing entity objects that are stored in the database is based on transparent ... Once an entity object is retrieved from the database (no matter which way) it can simply be modified in memory ... (); The entity object is physically updated in the database when the transaction is committed
Issue
11

Corrupt database page

Hello, we have encountered an issue, where a page of the database became corrupt. We are wondering ... . All rights reserved. Scanning the database file... ........................ 193MB (total) Analyzing database structure... 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% BTree Value Errors
Issue
11

Can't open replicated database

I have a database running in server mode on port 6136 on server1 and server2. Each server has a replicated copy of the other servers database. I try to open the replicated on one database for a query ... empty state of the database. I inserted a few rows into the databases and still got the error
Forum
11

Open several objectdb databases the same time

We tried to open objectdb databases from application and got following error: Attempt to open a database file 'D:\tmp\PAT-707\TC_9_2_3_1_8b@2015-09-17_12.08.15\TC_9_2_3_1_8b@2015-09-17_12.08.15.pa3 ... ) Caused by: com.objectdb.o.UserException: Attempt to open a database file 'D:\tmp\PAT-707\TC_9_2_3_1_8b